<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>首页</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }

        .index {
            width: 100vw;
            height: 100vh;
            display: flex;
            color: #fff;
        }

        .left {
            width: 200px;
            background: #369;
        }

        .left h2 {
            height: 60px;
            text-align: center;
            font-size: 30px;
            line-height: 60px;
        }

        .left .item {
            text-align: center;
        }

        .left .item a {
            font-size: 20px;
            text-decoration: none;
            color: #fff;
        }

        .right {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .top {
            height: 60px;
            background: #369;
            padding-right: 20px;
            display: flex;
            justify-content: flex-end;
            align-items: center;
        }

        .top button {
            padding: 2px 20px;
        }

        .center {
            flex: 1;
            padding: 10px;
        }

        .mosk {
            position: absolute;
            left: 0;
            top: 0;
            width: 100vw;
            height: 100vh;
            background: #fff
        }
    </style>
</head>

<body>
    <div class="index">
        <div class="left">
            <h2>高校管理系统</h2>
            <div class="item">
                <a href="student.html" target="center">学生管理</a>
            </div>

            <div class="item">
                <a href="subject.html" target="center">课程管理</a>
            </div>

            <div class="item">
                <a href="result.html" target="center">成绩管理</a>
            </div>
        </div>

        <div class="right">
            <div class="top">
                <button id="exit">退出</button>
            </div>
            <div class="center">
                <iframe style="width: 100%;height: 100% " frameborder="0" name="center"></iframe>
            </div>
        </div>
    </div>

    <div class="mosk"></div>
    <script src="./js/bing.js"></script>

    <script>
        window.onload = function () {
            $b.get("ckLogin", {}, (res) => {
                if (res.code == 0) {
                    alert("请登录系统");
                    location.href = "login.html"
                } else {
                    $b.selecter(".mosk").remove()
                }
            })
        }

        $b.selecter("#exit").onclick=function(){
            if(confirm("确定退出么?")){
                $b.post("exit",{},(res)=>{
                    if(res.code==1){
                        alert(res.message)
                        location.href = "login.html"
                    }
                })
            }
        }
    </script>
</body>
</html>